212745domain: NAppears in sequencesNumbers n such that 49*2^n-1 is prime.at n=29A050550(L(n+2)+2*3^n)/5.at n=12A099164Expansion of e.g.f. ( Product_{k>0} 1/(1-x^k)^(1/k!) )^(1/(1-x)).at n=7A356025